Until recently, I didn't have a Glock, so I didn't care. But I recently got one (sorta) so I want to ask - how big a magazine is normal for IPSC, etc, for a Glock? Is it any different for Carry Optics?
21 rounds? I see some are 24. Anyone use Magpuls? I would assume their 27's are too big?
21 rounds? I see some are 24. Anyone use Magpuls? I would assume their 27's are too big?

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